diff --git a/diverging/BrBG.plt b/diverging/BrBG.plt
index 26ad500..3fdaa67 100644
--- a/diverging/BrBG.plt
+++ b/diverging/BrBG.plt
@@ -1,25 +1,34 @@
 # line styles for ColorBrewer BrBG
 # for use with divering data
-# provides 8 colors with brown low, white middle, and blue-green high
+# provides 11 colors with brown low, white middle, and blue-green high
 # compatible with gnuplot >=4.2
 # author: Anna Schneider
 
 # line styles
-set style line 1 lc rgb '#8C510A' # dark brown
-set style line 2 lc rgb '#BF812D' # medium brown
-set style line 3 lc rgb '#DFC27D' # 
-set style line 4 lc rgb '#F6E8C3' # pale brown
-set style line 5 lc rgb '#C7EAE5' # pale blue-green
-set style line 6 lc rgb '#80CDC1' # 
-set style line 7 lc rgb '#35978F' # medium blue-green
-set style line 8 lc rgb '#01665E' # dark blue-green
+
+set style line 1 lc rgb'#543005'
+set style line 2 lc rgb'#8c510a'
+set style line 3 lc rgb'#bf812d'
+set style line 4 lc rgb'#dfc27d'
+set style line 5 lc rgb'#f6e8c3'
+set style line 6 lc rgb'#f5f5f5'
+set style line 7 lc rgb'#c7eae5'
+set style line 8 lc rgb'#80cdc1'
+set style line 9 lc rgb'#35978f'
+set style line 10 lc rgb'#01665e'
+set style line 11 lc rgb'#003c30'
 
 # palette
-set palette defined ( 0 '#8C510A',\
-    	    	      1 '#BF812D',\
-		      2 '#DFC27D',\
-		      3 '#F6E8C3',\
-		      4 '#C7EAE5',\
-		      5 '#80CDC1',\
-		      6 '#35978F',\
-		      7 '#01665E' )
\ No newline at end of file
+
+set palette defined ( 0 '#543005',\
+1 '#8c510a',\
+2 '#bf812d',\
+3 '#dfc27d',\
+4 '#f6e8c3',\
+5 '#f5f5f5',\
+6 '#c7eae5',\
+7 '#80cdc1',\
+8 '#35978f',\
+9 '#01665e',\
+10 '#003c30' )
+
diff --git a/diverging/PRGn.plt b/diverging/PRGn.plt
index 31b0dd3..afe0dba 100644
--- a/diverging/PRGn.plt
+++ b/diverging/PRGn.plt
@@ -1,25 +1,33 @@
 # line styles for ColorBrewer PRGn (aka PuGn)
 # for use with divering data
-# provides 8 colors with purple low, white middle, and green high
+# provides 11 colors with purple low, white middle, and green high
 # compatible with gnuplot >=4.2
 # author: Anna Schneider
 
 # line styles
-set style line 1 lc rgb '#762A83' # dark purple
-set style line 2 lc rgb '#9970AB' # medium purple
-set style line 3 lc rgb '#C2A5CF' # 
-set style line 4 lc rgb '#E7D4E8' # pale purple
-set style line 5 lc rgb '#D9F0D3' # pale green
-set style line 6 lc rgb '#A6DBA0' # 
-set style line 7 lc rgb '#5AAE61' # medium green
-set style line 8 lc rgb '#1B7837' # dark green
+
+set style line 1 lc rgb'#40004b'
+set style line 2 lc rgb'#762a83'
+set style line 3 lc rgb'#9970ab'
+set style line 4 lc rgb'#c2a5cf'
+set style line 5 lc rgb'#e7d4e8'
+set style line 6 lc rgb'#f7f7f7'
+set style line 7 lc rgb'#d9f0d3'
+set style line 8 lc rgb'#a6dba0'
+set style line 9 lc rgb'#5aae61'
+set style line 10 lc rgb'#1b7837'
+set style line 11 lc rgb'#00441b'
 
 # palette
-set palette defined ( 0 '#762A83',\
-    	    	      1 '#9970AB',\
-		      2 '#C2A5CF',\
-		      3 '#E7D4E8',\
-		      4 '#D9F0D3',\
-		      5 '#A6DBA0',\
-		      6 '#5AAE61',\
-		      7 '#1B7837' )
\ No newline at end of file
+
+set palette defined ( 0 '#40004b',\
+1 '#762a83',\
+2 '#9970ab',\
+3 '#c2a5cf',\
+4 '#e7d4e8',\
+5 '#f7f7f7',\
+6 '#d9f0d3',\
+7 '#a6dba0',\
+8 '#5aae61',\
+9 '#1b7837',\
+10 '#00441b' )
diff --git a/diverging/PiYG.plt b/diverging/PiYG.plt
index 4465cee..7712825 100644
--- a/diverging/PiYG.plt
+++ b/diverging/PiYG.plt
@@ -1,25 +1,33 @@
 # line styles for ColorBrewer PiYG
 # for use with divering data
-# provides 8 colors with pink low, white middle, and yellow-green high
+# provides 11 colors with pink low, white middle, and yellow-green high
 # compatible with gnuplot >=4.2
 # author: Anna Schneider
 
 # line styles
-set style line 1 lc rgb '#C51B7D' # dark pink
-set style line 2 lc rgb '#DE77AE' # medium pink
-set style line 3 lc rgb '#F1B6DA' # 
-set style line 4 lc rgb '#FDE0EF' # pale pink
-set style line 5 lc rgb '#E6F5D0' # pale yellow-green
-set style line 6 lc rgb '#B8E186' # 
-set style line 7 lc rgb '#7FBC41' # medium yellow-green
-set style line 8 lc rgb '#4D9221' # dark yellow-green
+
+set style line 1 lc rgb'#8e0152'
+set style line 2 lc rgb'#c51b7d'
+set style line 3 lc rgb'#de77ae'
+set style line 4 lc rgb'#f1b6da'
+set style line 5 lc rgb'#fde0ef'
+set style line 6 lc rgb'#f7f7f7'
+set style line 7 lc rgb'#e6f5d0'
+set style line 8 lc rgb'#b8e186'
+set style line 9 lc rgb'#7fbc41'
+set style line 10 lc rgb'#4d9221'
+set style line 11 lc rgb'#276419'
 
 # palette
-set palette defined ( 0 '#C51B7D',\
-    	    	      1 '#DE77AE',\
-		      2 '#F1B6DA',\
-		      3 '#FDE0EF',\
-		      4 '#E6F5D0',\
-		      5 '#B8E186',\
-		      6 '#7FBC41',\
-		      7 '#4D9221' )
\ No newline at end of file
+
+set palette defined ( 0 '#8e0152',\
+1 '#c51b7d',\
+2 '#de77ae',\
+3 '#f1b6da',\
+4 '#fde0ef',\
+5 '#f7f7f7',\
+6 '#e6f5d0',\
+7 '#b8e186',\
+8 '#7fbc41',\
+9 '#4d9221',\
+10 '#276419' )
diff --git a/diverging/PuOr.plt b/diverging/PuOr.plt
index 6a82e26..ffc2c48 100644
--- a/diverging/PuOr.plt
+++ b/diverging/PuOr.plt
@@ -1,25 +1,33 @@
 # line styles for ColorBrewer PuOr
 # for use with divering data
-# provides 8 colors with orange low, white middle, and purple high
+# provides 11 colors with orange low, white middle, and purple high
 # compatible with gnuplot >=4.2
 # author: Anna Schneider
 
 # line styles
-set style line 1 lc rgb '#B35806' # dark orange
-set style line 2 lc rgb '#E08214' # medium orange
-set style line 3 lc rgb '#FDB863' # 
-set style line 4 lc rgb '#FEE0B6' # pale orange
-set style line 5 lc rgb '#D8DAEB' # pale purple
-set style line 6 lc rgb '#B2ABD2' # 
-set style line 7 lc rgb '#8073AC' # medium purple
-set style line 8 lc rgb '#542788' # dark purple
+
+set style line 1 lc rgb'#7f3b08'
+set style line 2 lc rgb'#b35806'
+set style line 3 lc rgb'#e08214'
+set style line 4 lc rgb'#fdb863'
+set style line 5 lc rgb'#fee0b6'
+set style line 6 lc rgb'#f7f7f7'
+set style line 7 lc rgb'#d8daeb'
+set style line 8 lc rgb'#b2abd2'
+set style line 9 lc rgb'#8073ac'
+set style line 10 lc rgb'#542788'
+set style line 11 lc rgb'#2d004b'
 
 # palette
-set palette defined ( 0 '#B35806',\
-    	    	      1 '#E08214',\
-		      2 '#FDB863',\
-		      3 '#FEE0B6',\
-		      4 '#D8DAEB',\
-		      5 '#B2ABD2',\
-		      6 '#8073AC',\
-		      7 '#542788' )
\ No newline at end of file
+
+set palette defined ( 0 '#7f3b08',\
+1 '#b35806',\
+2 '#e08214',\
+3 '#fdb863',\
+4 '#fee0b6',\
+5 '#f7f7f7',\
+6 '#d8daeb',\
+7 '#b2abd2',\
+8 '#8073ac',\
+9 '#542788',\
+10 '#2d004b' )
diff --git a/diverging/RdBu.plt b/diverging/RdBu.plt
index f072854..f9d4edb 100644
--- a/diverging/RdBu.plt
+++ b/diverging/RdBu.plt
@@ -1,25 +1,34 @@
 # line styles for ColorBrewer RdBu
 # for use with divering data
-# provides 8 colors with red low, white middle, and blue high
+# provides 11 colors with red low, white middle, and blue high
 # compatible with gnuplot >=4.2
 # author: Anna Schneider
 
 # line styles
-set style line 1 lc rgb '#B2182B' # red
-set style line 2 lc rgb '#D6604D' # red-orange
-set style line 3 lc rgb '#F4A582' # 
-set style line 4 lc rgb '#FDDBC7' # pale orange
-set style line 5 lc rgb '#D1E5F0' # pale blue
-set style line 6 lc rgb '#92C5DE' # 
-set style line 7 lc rgb '#4393C3' # medium blue
-set style line 8 lc rgb '#2166AC' # dark blue
+
+set style line 1 lc rgb'#67001F'
+set style line 2 lc rgb'#B2182B'
+set style line 3 lc rgb'#D6604D'
+set style line 4 lc rgb'#F4A582'
+set style line 5 lc rgb'#FDDBC7'
+set style line 6 lc rgb'#F7F7F7'
+set style line 7 lc rgb'#D1E5F0'
+set style line 8 lc rgb'#92C5DE'
+set style line 9 lc rgb'#4393C3'
+set style line 10 lc rgb'#2166AC'
+set style line 11 lc rgb'#053061'
 
 # palette
-set palette defined ( 0 '#B2182B',\
-    	    	      1 '#D6604D',\
-		      2 '#F4A582',\
-		      3 '#FDDBC7',\
-		      4 '#D1E5F0',\
-		      5 '#92C5DE',\
-		      6 '#4393C3',\
-		      7 '#2166AC' )
\ No newline at end of file
+
+set palette defined ( 0 '#67001F',\
+1 '#B2182B',\
+2 '#D6604D',\
+3 '#F4A582',\
+4 '#FDDBC7',\
+5 '#F7F7F7',\
+6 '#D1E5F0',\
+7 '#92C5DE',\
+8 '#4393C3',\
+9 '#2166AC',\
+10 '#053061' )
+
diff --git a/diverging/RdGy.plt b/diverging/RdGy.plt
index 5b6d909..cb4d9c7 100644
--- a/diverging/RdGy.plt
+++ b/diverging/RdGy.plt
@@ -1,25 +1,33 @@
 # line styles for ColorBrewer RdGy
 # for use with divering data
-# provides 8 colors with red low, white middle, and grey high
+# provides 11 colors with red low, white middle, and grey high
 # compatible with gnuplot >=4.2
 # author: Anna Schneider
 
 # line styles
-set style line 1 lc rgb '#B2182B' # red
-set style line 2 lc rgb '#D6604D' # red-orange
-set style line 3 lc rgb '#F4A582' # 
-set style line 4 lc rgb '#FDDBC7' # pale orange
-set style line 5 lc rgb '#E0E0E0' # pale grey
-set style line 6 lc rgb '#BABABA' # 
-set style line 7 lc rgb '#878787' # medium grey
-set style line 8 lc rgb '#4D4D4D' # dark grey
+
+set style line 1 lc rgb'#67001F'
+set style line 2 lc rgb'#B2182B'
+set style line 3 lc rgb'#D6604D'
+set style line 4 lc rgb'#F4A582'
+set style line 5 lc rgb'#FFFFFF'
+set style line 6 lc rgb'#F7F7F7'
+set style line 7 lc rgb'#E0E0E0'
+set style line 8 lc rgb'#BABABA'
+set style line 9 lc rgb'#878787'
+set style line 10 lc rgb'#4D4D4D'
+set style line 11 lc rgb'#1A1A1A'
 
 # palette
-set palette defined ( 0 '#B2182B',\
-    	    	      1 '#D6604D',\
-		      2 '#F4A582',\
-		      3 '#FDDBC7',\
-		      4 '#E0E0E0',\
-		      5 '#BABABA',\
-		      6 '#878787',\
-		      7 '#4D4D4D' )
\ No newline at end of file
+
+set palette defined ( 0 '#67001F',\
+1 '#B2182B',\
+2 '#D6604D',\
+3 '#F4A582',\
+4 '#FFFFFF',\
+5 '#F7F7F7',\
+6 '#E0E0E0',\
+7 '#BABABA',\
+8 '#878787',\
+9 '#4D4D4D',\
+10 '#1A1A1A' )
diff --git a/diverging/RdYlBu.plt b/diverging/RdYlBu.plt
index ad592ff..3d899fc 100644
--- a/diverging/RdYlBu.plt
+++ b/diverging/RdYlBu.plt
@@ -1,25 +1,33 @@
 # line styles for ColorBrewer RdYlBu
 # for use with divering data
-# provides 8 colors with red low, pale yellow middle, and blue high
+# provides 11 colors with red low, pale yellow middle, and blue high
 # compatible with gnuplot >=4.2
 # author: Anna Schneider
 
 # line styles
-set style line 1 lc rgb '#D73027' # red
-set style line 2 lc rgb '#F46D43' # orange
-set style line 3 lc rgb '#FDAE61' # 
-set style line 4 lc rgb '#FEE090' # pale orange
-set style line 5 lc rgb '#E0F3F8' # pale blue
-set style line 6 lc rgb '#ABD9E9' # 
-set style line 7 lc rgb '#74ADD1' # medium blue
-set style line 8 lc rgb '#4575B4' # blue
+
+set style line 1 lc rgb'#a50026'
+set style line 2 lc rgb'#d73027'
+set style line 3 lc rgb'#f46d43'
+set style line 4 lc rgb'#fdae61'
+set style line 5 lc rgb'#fee090'
+set style line 6 lc rgb'#ffffbf'
+set style line 7 lc rgb'#e0f3f8'
+set style line 8 lc rgb'#abd9e9'
+set style line 9 lc rgb'#74add1'
+set style line 10 lc rgb'#4575b4'
+set style line 11 lc rgb'#313695'
 
 # palette
-set palette defined ( 0 '#D73027',\
-    	    	      1 '#F46D43',\
-		      2 '#FDAE61',\
-		      3 '#FEE090',\
-		      4 '#E0F3F8',\
-		      5 '#ABD9E9',\
-		      6 '#74ADD1',\
-		      7 '#4575B4' )
\ No newline at end of file
+
+set palette defined ( 0 '#a50026',\
+1 '#d73027',\
+2 '#f46d43',\
+3 '#fdae61',\
+4 '#fee090',\
+5 '#ffffbf',\
+6 '#e0f3f8',\
+7 '#abd9e9',\
+8 '#74add1',\
+9 '#4575b4',\
+10 '#313695' )
diff --git a/diverging/RdYlGn.plt b/diverging/RdYlGn.plt
index 923d7c4..f34b780 100644
--- a/diverging/RdYlGn.plt
+++ b/diverging/RdYlGn.plt
@@ -1,25 +1,33 @@
 # line styles for ColorBrewer RdYlGn
 # for use with divering data
-# provides 8 colors with red low, pale yellow middle, and green high
+# provides 11 colors with red low, pale yellow middle, and green high
 # compatible with gnuplot >=4.2
 # author: Anna Schneider
 
 # line styles
-set style line 1 lc rgb '#D73027' # red
-set style line 2 lc rgb '#F46D43' # orange
-set style line 3 lc rgb '#FDAE61' # pale orange
-set style line 4 lc rgb '#FEE08B' # pale yellow-orange
-set style line 5 lc rgb '#D9EF8B' # pale yellow-green
-set style line 6 lc rgb '#A6D96A' # pale green
-set style line 7 lc rgb '#66BD63' # medium green
-set style line 8 lc rgb '#1A9850' # green
+
+set style line 1 lc rgb'#a50026'
+set style line 2 lc rgb'#d73027'
+set style line 3 lc rgb'#f46d43'
+set style line 4 lc rgb'#fdae61'
+set style line 5 lc rgb'#fee090'
+set style line 6 lc rgb'#ffffbf'
+set style line 7 lc rgb'#d9ef8b'
+set style line 8 lc rgb'#a6d96a'
+set style line 9 lc rgb'#66bd63'
+set style line 10 lc rgb'#1a9850'
+set style line 11 lc rgb'#006837'
 
 # palette
-set palette defined ( 0 '#D73027',\
-    	    	      1 '#F46D43',\
-		      2 '#FDAE61',\
-		      3 '#FEE08B',\
-		      4 '#D9EF8B',\
-		      5 '#A6D96A',\
-		      6 '#66BD63',\
-		      7 '#1A9850' )
\ No newline at end of file
+
+set palette defined ( 0 '#a50026',\
+1 '#d73027',\
+2 '#f46d43',\
+3 '#fdae61',\
+4 '#fee090',\
+5 '#ffffbf',\
+6 '#d9ef8b',\
+7 '#a6d96a',\
+8 '#66bd63',\
+9 '#1a9850',\
+10 '#006837' )
diff --git a/diverging/Spectral.plt b/diverging/Spectral.plt
index 02f4bf0..01719f9 100644
--- a/diverging/Spectral.plt
+++ b/diverging/Spectral.plt
@@ -1,25 +1,33 @@
 # line styles for ColorBrewer Spectral
 # for use with divering data
-# provides 8 rainbow colors with red low, pale yellow middle, and blue high
+# provides 11 rainbow colors with red low, pale yellow middle, and blue high
 # compatible with gnuplot >=4.2
 # author: Anna Schneider
 
 # line styles
-set style line 1 lc rgb '#D53E4F' # red
-set style line 2 lc rgb '#F46D43' # orange
-set style line 3 lc rgb '#FDAE61' # pale orange
-set style line 4 lc rgb '#FEE08B' # pale yellow-orange
-set style line 5 lc rgb '#E6F598' # pale yellow-green
-set style line 6 lc rgb '#ABDDA4' # pale green
-set style line 7 lc rgb '#66C2A5' # green
-set style line 8 lc rgb '#3288BD' # blue
+
+set style line 1 lc rgb'#9e0142'
+set style line 2 lc rgb'#d53e4f'
+set style line 3 lc rgb'#f46d43'
+set style line 4 lc rgb'#fdae61'
+set style line 5 lc rgb'#fee08b'
+set style line 6 lc rgb'#ffffbf'
+set style line 7 lc rgb'#e6f598'
+set style line 8 lc rgb'#abdda4'
+set style line 9 lc rgb'#66c2a5'
+set style line 10 lc rgb'#3288bd'
+set style line 11 lc rgb'#5e4fa2'
 
 # palette
-set palette defined ( 0 '#D53E4F',\
-    	    	      1 '#F46D43',\
-		      2 '#FDAE61',\
-		      3 '#FEE08B',\
-		      4 '#E6F598',\
-		      5 '#ABDDA4',\
-		      6 '#66C2A5',\
-		      7 '#3288BD' )
\ No newline at end of file
+
+set palette defined ( 0 '#9e0142',\
+1 '#d53e4f',\
+2 '#f46d43',\
+3 '#fdae61',\
+4 '#fee08b',\
+5 '#ffffbf',\
+6 '#e6f598',\
+7 '#abdda4',\
+8 '#66c2a5',\
+9 '#3288bd',\
+10 '#5e4fa2' )
diff --git a/examples/data_11.txt b/examples/data_11.txt
new file mode 100644
index 0000000..8a7a3c1
--- /dev/null
+++ b/examples/data_11.txt
@@ -0,0 +1,22 @@
+1 1 1
+1 2 2
+1 3 3
+1 4 4
+1 5 5
+1 6 6
+1 7 7
+1 8 8
+1 9 9
+1 10 10
+1 11 11
+2 1 1
+2 2 2
+2 3 3
+2 4 4
+2 5 5
+2 6 6
+2 7 7
+2 8 8
+2 9 9
+2 10 10
+2 11 11
diff --git a/examples/data_12.txt b/examples/data_12.txt
new file mode 100644
index 0000000..31485ba
--- /dev/null
+++ b/examples/data_12.txt
@@ -0,0 +1,24 @@
+1 1 1
+1 2 2
+1 3 3
+1 4 4
+1 5 5
+1 6 6
+1 7 7
+1 8 8
+1 9 9
+1 10 10
+1 11 11
+1 12 12
+2 1 1
+2 2 2
+2 3 3
+2 4 4
+2 5 5
+2 6 6
+2 7 7
+2 8 8
+2 9 9
+2 10 10
+2 11 11
+2 12 12
diff --git a/examples/data.txt b/examples/data_8.txt
similarity index 100%
rename from examples/data.txt
rename to examples/data_8.txt
diff --git a/examples/data_9.txt b/examples/data_9.txt
new file mode 100644
index 0000000..f1e880f
--- /dev/null
+++ b/examples/data_9.txt
@@ -0,0 +1,18 @@
+1 1 1
+1 2 2
+1 3 3
+1 4 4
+1 5 5
+1 6 6
+1 7 7
+1 8 8
+1 9 9
+2 1 1
+2 2 2
+2 3 3
+2 4 4
+2 5 5
+2 6 6
+2 7 7
+2 8 8
+2 9 9
\ No newline at end of file
diff --git a/examples/diverging.plt b/examples/diverging.plt
index e9c09ea..ae061a1 100755
--- a/examples/diverging.plt
+++ b/examples/diverging.plt
@@ -31,12 +31,12 @@ do for [pal in "BrBG PiYG PRGn PuOr RdBu RdGy RdYlBu RdYlGn Spectral"] {
     # plot colorbar
     set lmargin 4
     set rmargin 4
-    plot 'data.txt' u 1:2:3 w image
+    plot 'data_11.txt' u 1:2:3 w image
     # plot lines
     set label 1 pal at -1,0 left front
     set lmargin -6
     set rmargin 1
-    plot for [ii=1:8] f(x,ii) ls ii lw 2
+    plot for [ii=1:11] f(x,ii) ls ii lw 2
     unset label
 }
 
diff --git a/examples/diverging.png b/examples/diverging.png
index 6430976..f634f98 100644
Binary files a/examples/diverging.png and b/examples/diverging.png differ
diff --git a/examples/diverging_colored_lines.plt b/examples/diverging_colored_lines.plt
index 6d6897a..7e52a5b 100644
--- a/examples/diverging_colored_lines.plt
+++ b/examples/diverging_colored_lines.plt
@@ -21,7 +21,10 @@ f(x,4) ls 4 title 'line 4',\
 f(x,5) ls 5 title 'line 5',\
 f(x,6) ls 6 title 'line 6',\
 f(x,7) ls 7 title 'line 7',\
-f(x,8) ls 8 title 'line 8'
+f(x,8) ls 8 title 'line 8',\
+f(x,9) ls 9 title 'line 9',\
+f(x,10) ls 10 title 'line 10',\
+f(x,11) ls 11 title 'line 11'
 
 # plot with PiYG
 set title 'PiYG'
@@ -33,7 +36,11 @@ f(x,4) ls 4 title 'line 4',\
 f(x,5) ls 5 title 'line 5',\
 f(x,6) ls 6 title 'line 6',\
 f(x,7) ls 7 title 'line 7',\
-f(x,8) ls 8 title 'line 8'
+f(x,8) ls 8 title 'line 8',\
+f(x,9) ls 9 title 'line 9',\
+f(x,10) ls 10 title 'line 10',\
+f(x,11) ls 11 title 'line 11'
+
 
 # plot with PRGn
 set title 'PRGn'
@@ -45,7 +52,11 @@ f(x,4) ls 4 title 'line 4',\
 f(x,5) ls 5 title 'line 5',\
 f(x,6) ls 6 title 'line 6',\
 f(x,7) ls 7 title 'line 7',\
-f(x,8) ls 8 title 'line 8'
+f(x,8) ls 8 title 'line 8',\
+f(x,9) ls 9 title 'line 9',\
+f(x,10) ls 10 title 'line 10',\
+f(x,11) ls 11 title 'line 11'
+
 
 # plot with PuOr
 set title 'PuOr'
@@ -57,7 +68,11 @@ f(x,4) ls 4 title 'line 4',\
 f(x,5) ls 5 title 'line 5',\
 f(x,6) ls 6 title 'line 6',\
 f(x,7) ls 7 title 'line 7',\
-f(x,8) ls 8 title 'line 8'
+f(x,8) ls 8 title 'line 8',\
+f(x,9) ls 9 title 'line 9',\
+f(x,10) ls 10 title 'line 10',\
+f(x,11) ls 11 title 'line 11'
+
 
 # plot with RdBu
 set title 'RdBu'
@@ -69,7 +84,11 @@ f(x,4) ls 4 title 'line 4',\
 f(x,5) ls 5 title 'line 5',\
 f(x,6) ls 6 title 'line 6',\
 f(x,7) ls 7 title 'line 7',\
-f(x,8) ls 8 title 'line 8'
+f(x,8) ls 8 title 'line 8',\
+f(x,9) ls 9 title 'line 9',\
+f(x,10) ls 10 title 'line 10',\
+f(x,11) ls 11 title 'line 11'
+
 
 # plot with RdGy
 set title 'RdGy'
@@ -81,7 +100,11 @@ f(x,4) ls 4 title 'line 4',\
 f(x,5) ls 5 title 'line 5',\
 f(x,6) ls 6 title 'line 6',\
 f(x,7) ls 7 title 'line 7',\
-f(x,8) ls 8 title 'line 8'
+f(x,8) ls 8 title 'line 8',\
+f(x,9) ls 9 title 'line 9',\
+f(x,10) ls 10 title 'line 10',\
+f(x,11) ls 11 title 'line 11'
+
 
 # plot with RdYlBu
 set title 'RdYlBu'
@@ -93,7 +116,11 @@ f(x,4) ls 4 title 'line 4',\
 f(x,5) ls 5 title 'line 5',\
 f(x,6) ls 6 title 'line 6',\
 f(x,7) ls 7 title 'line 7',\
-f(x,8) ls 8 title 'line 8'
+f(x,8) ls 8 title 'line 8',\
+f(x,9) ls 9 title 'line 9',\
+f(x,10) ls 10 title 'line 10',\
+f(x,11) ls 11 title 'line 11'
+
 
 # plot with RdYlGn
 set title 'RdYlGn'
@@ -105,7 +132,11 @@ f(x,4) ls 4 title 'line 4',\
 f(x,5) ls 5 title 'line 5',\
 f(x,6) ls 6 title 'line 6',\
 f(x,7) ls 7 title 'line 7',\
-f(x,8) ls 8 title 'line 8'
+f(x,8) ls 8 title 'line 8',\
+f(x,9) ls 9 title 'line 9',\
+f(x,10) ls 10 title 'line 10',\
+f(x,11) ls 11 title 'line 11'
+
 
 # plot with Spectral
 set title 'Spectral'
@@ -117,4 +148,8 @@ f(x,4) ls 4 title 'line 4',\
 f(x,5) ls 5 title 'line 5',\
 f(x,6) ls 6 title 'line 6',\
 f(x,7) ls 7 title 'line 7',\
-f(x,8) ls 8 title 'line 8'
+f(x,8) ls 8 title 'line 8',\
+f(x,9) ls 9 title 'line 9',\
+f(x,10) ls 10 title 'line 10',\
+f(x,11) ls 11 title 'line 11'
+
diff --git a/examples/diverging_colored_lines.ps b/examples/diverging_colored_lines.ps
index f149983..fd5caa4 100644
Binary files a/examples/diverging_colored_lines.ps and b/examples/diverging_colored_lines.ps differ
diff --git a/examples/diverging_colored_palettes.ps b/examples/diverging_colored_palettes.ps
index cc028e8..241c7b2 100644
Binary files a/examples/diverging_colored_palettes.ps and b/examples/diverging_colored_palettes.ps differ
diff --git a/examples/qualitative.plt b/examples/qualitative.plt
index 0366f3e..6a00c64 100755
--- a/examples/qualitative.plt
+++ b/examples/qualitative.plt
@@ -25,13 +25,13 @@ f(x,i) = cos(x - 1.0 + i/10.0)
 
 set multiplot layout 3,6
 
-do for [pal in "Accent Dark2 Paired Pastel1 Pastel2 Set1 Set2 Set3"] {
+do for [pal in "Accent Dark2 Pastel2 Set2"] {
     filename = '../qualitative/'.pal.'.plt'
     load filename
     # plot colorbar
     set lmargin 4
     set rmargin 4
-    plot 'data.txt' u 1:2:3 w image
+    plot 'data_8.txt' u 1:2:3 w image
     # plot lines
     set label 1 pal at -1,0 left front
     set lmargin -6
@@ -40,4 +40,34 @@ do for [pal in "Accent Dark2 Paired Pastel1 Pastel2 Set1 Set2 Set3"] {
     unset label
 }
 
+do for [pal in "Pastel1 Set1"] {
+    filename = '../qualitative/'.pal.'.plt'
+    load filename
+    # plot colorbar
+    set lmargin 4
+    set rmargin 4
+    plot 'data_9.txt' u 1:2:3 w image
+    # plot lines
+    set label 1 pal at -1,0 left front
+    set lmargin -6
+    set rmargin 1
+    plot for [ii=1:9] f(x,ii) ls ii lw 2
+    unset label
+}
+
+do for [pal in "Paired Set3"] {
+    filename = '../qualitative/'.pal.'.plt'
+    load filename
+    # plot colorbar
+    set lmargin 4
+    set rmargin 4
+    plot 'data_12.txt' u 1:2:3 w image
+    # plot lines
+    set label 1 pal at -1,0 left front
+    set lmargin -6
+    set rmargin 1
+    plot for [ii=1:12] f(x,ii) ls ii lw 2
+    unset label
+}
+
 unset multiplot
diff --git a/examples/qualitative.png b/examples/qualitative.png
index 64347d0..0f207c2 100644
Binary files a/examples/qualitative.png and b/examples/qualitative.png differ
diff --git a/examples/qualitative_colored_lines.plt b/examples/qualitative_colored_lines.plt
index 9541e92..b0af6ea 100644
--- a/examples/qualitative_colored_lines.plt
+++ b/examples/qualitative_colored_lines.plt
@@ -21,7 +21,8 @@ f(x,4) ls 4 title 'line 4',\
 f(x,5) ls 5 title 'line 5',\
 f(x,6) ls 6 title 'line 6',\
 f(x,7) ls 7 title 'line 7',\
-f(x,8) ls 8 title 'line 8'
+f(x,8) ls 8 title 'line 8',\
+f(x,9) ls 9 title 'line 9'
 
 # plot with Paired
 set title 'Paired'
@@ -33,7 +34,11 @@ f(x,4) ls 4 title 'line 4',\
 f(x,5) ls 5 title 'line 5',\
 f(x,6) ls 6 title 'line 6',\
 f(x,7) ls 7 title 'line 7',\
-f(x,8) ls 8 title 'line 8'
+f(x,8) ls 8 title 'line 8',\
+f(x,9) ls 9 title 'line 9',\
+f(x,10) ls 10 title 'line 10',\
+f(x,11) ls 11 title 'line 11',\
+f(x,12) ls 12 title 'line 12'
 
 # plot with Accent
 set title 'Accent'
@@ -57,7 +62,8 @@ f(x,4) ls 4 title 'line 4',\
 f(x,5) ls 5 title 'line 5',\
 f(x,6) ls 6 title 'line 6',\
 f(x,7) ls 7 title 'line 7',\
-f(x,8) ls 8 title 'line 8'
+f(x,8) ls 8 title 'line 8',\
+f(x,9) ls 9 title 'line 9'
 
 # plot with Set2
 set title 'Set2'
@@ -105,4 +111,8 @@ f(x,4) ls 4 title 'line 4',\
 f(x,5) ls 5 title 'line 5',\
 f(x,6) ls 6 title 'line 6',\
 f(x,7) ls 7 title 'line 7',\
-f(x,8) ls 8 title 'line 8'
+f(x,8) ls 8 title 'line 8',\
+f(x,9) ls 9 title 'line 9',\
+f(x,10) ls 10 title 'line 10',\
+f(x,11) ls 11 title 'line 11',\
+f(x,12) ls 12 title 'line 12'
diff --git a/examples/qualitative_colored_lines.ps b/examples/qualitative_colored_lines.ps
index e243da8..6b764e2 100644
Binary files a/examples/qualitative_colored_lines.ps and b/examples/qualitative_colored_lines.ps differ
diff --git a/examples/qualitative_colored_palettes.ps b/examples/qualitative_colored_palettes.ps
index 1a2b380..15149f7 100644
Binary files a/examples/qualitative_colored_palettes.ps and b/examples/qualitative_colored_palettes.ps differ
diff --git a/examples/sequential.plt b/examples/sequential.plt
index 4f398a8..7066583 100755
--- a/examples/sequential.plt
+++ b/examples/sequential.plt
@@ -31,7 +31,7 @@ do for [pal in "Blues BuPu Greens Oranges PuBuGn PuRd RdPu YlGnBu YlOrBr BuGn Gn
     # plot colorbar
     set lmargin 4
     set rmargin 4
-    plot 'data.txt' u 1:2:3 w image
+    plot 'data_8.txt' u 1:2:3 w image
     # plot lines
     set label 1 pal at -1,0 left front
     set lmargin -6
diff --git a/examples/sequential.png b/examples/sequential.png
index 24a8149..5331eed 100644
Binary files a/examples/sequential.png and b/examples/sequential.png differ
diff --git a/qualitative/Accent.plt b/qualitative/Accent.plt
index 2e8e504..d7774f0 100644
--- a/qualitative/Accent.plt
+++ b/qualitative/Accent.plt
@@ -17,7 +17,7 @@ set style line 8 lc rgb '#666666' # grey
 # palette
 set palette maxcolors 8
 set palette defined ( 0 '#7FC97F',\
-    	    	      1 '#BEAED4',\
+      1 '#BEAED4',\
 		      2 '#FDC086',\
 		      3 '#FFFF99',\
 		      4 '#386CB0',\
diff --git a/qualitative/Dark2.plt b/qualitative/Dark2.plt
index 8563023..fc6e187 100644
--- a/qualitative/Dark2.plt
+++ b/qualitative/Dark2.plt
@@ -17,7 +17,7 @@ set style line 8 lc rgb '#666666' # dark gray
 # palette
 set palette maxcolors 8
 set palette defined ( 0 '#1B9E77',\
-    	    	      1 '#D95F02',\
+      1 '#D95F02',\
 		      2 '#7570B3',\
 		      3 '#E7298A',\
 		      4 '#66A61E',\
diff --git a/qualitative/Paired.plt b/qualitative/Paired.plt
index 3c308e9..34c665f 100644
--- a/qualitative/Paired.plt
+++ b/qualitative/Paired.plt
@@ -1,26 +1,34 @@
 # line styles for ColorBrewer Paired
 # for use with qualitative/categorical data
-# provides 8 colors in 4 pairs
+# provides 12 colors in 4 pairs
 # compatible with gnuplot >=4.2
 # author: Anna Schneider
 
 # line styles
-set style line 1 lc rgb '#A6CEE3' # light blue
-set style line 2 lc rgb '#1F78B4' # dark blue
-set style line 3 lc rgb '#B2DF8A' # light green
-set style line 4 lc rgb '#33A02C' # dark green
-set style line 5 lc rgb '#FB9A99' # light red
-set style line 6 lc rgb '#E31A1C' # dark red
-set style line 7 lc rgb '#FDBF6F' # light orange
-set style line 8 lc rgb '#FF7F00' # dark orange
+set style line 1 lc rgb '#a6cee3'
+set style line 2 lc rgb '#1f78b4'
+set style line 3 lc rgb '#b2df8a'
+set style line 4 lc rgb '#33a02c'
+set style line 5 lc rgb '#fb9a99'
+set style line 6 lc rgb '#e31a1c'
+set style line 7 lc rgb '#fdbf6f'
+set style line 8 lc rgb '#ff7f00'
+set style line 9 lc rgb '#cab2d6'
+set style line 10 lc rgb '#6a3d9a'
+set style line 11 lc rgb '#ffff99'
+set style line 12 lc rgb '#b15928'
 
 # palette
-set palette maxcolors 8
-set palette defined ( 0 '#A6CEE3',\
-    	    	      1 '#1F78B4',\
-		      2 '#B2DF8A',\
-		      3 '#33A02C',\
-		      4 '#FB9A99',\
-		      5 '#E31A1C',\
-		      6 '#FDBF6F',\
-		      7 '#FF7F00' )
+set palette maxcolors 12
+set palette defined ( 0 '#a6cee3',\
+      1 '#1f78b4',\
+		      2 '#b2df8a',\
+		      3 '#33a02c',\
+		      4 '#fb9a99',\
+		      5 '#e31a1c',\
+		      6 '#fdbf6f',\
+		      7 '#ff7f00',\
+		      8 '#cab2d6',\
+		      9 '#6a3d9a',\
+		      10 '#ffff99',\
+		      11 '#b15928' )
diff --git a/qualitative/Pastel1.plt b/qualitative/Pastel1.plt
index 6edbf42..c979c6c 100644
--- a/qualitative/Pastel1.plt
+++ b/qualitative/Pastel1.plt
@@ -1,26 +1,28 @@
 # line styles for ColorBrewer Pastel1
 # for use with qualitative/categorical data
-# provides 8 pale colors based on Set1
+# provides 9 pale colors based on Set1
 # compatible with gnuplot >=4.2
 # author: Anna Schneider
 
 # line styles
-set style line 1 lc rgb '#FBB4AE' # pale red
-set style line 2 lc rgb '#B3CDE3' # pale blue
-set style line 3 lc rgb '#CCEBC5' # pale green
-set style line 4 lc rgb '#DECBE4' # pale purple
-set style line 5 lc rgb '#FED9A6' # pale orange
-set style line 6 lc rgb '#FFFFCC' # pale yellow
-set style line 7 lc rgb '#E5D8BD' # pale brown
-set style line 8 lc rgb '#FDDAEC' # pale pink
+set style line 1 lc rgb '#FBB4AE' #
+set style line 2 lc rgb '#B3CDE3' #
+set style line 3 lc rgb '#CCEBC5' #
+set style line 4 lc rgb '#DECBE4' #
+set style line 5 lc rgb '#FED9A6' #
+set style line 6 lc rgb '#FFFFCC' #
+set style line 7 lc rgb '#E5D8BD' #
+set style line 8 lc rgb '#FDDAEC' #
+set style line 9 lc rgb '#F2F2F2' #
 
 # palette
-set palette maxcolors 8
+set palette maxcolors 9
 set palette defined ( 0 '#FBB4AE',\
-    	    	      1 '#B3CDE3',\
+      1 '#B3CDE3',\
 		      2 '#CCEBC5',\
 		      3 '#DECBE4',\
 		      4 '#FED9A6',\
 		      5 '#FFFFCC',\
 		      6 '#E5D8BD',\
-		      7 '#FDDAEC' )
+		      7 '#FDDAEC',\
+		      8 '#F2F2F2' )
diff --git a/qualitative/Pastel2.plt b/qualitative/Pastel2.plt
index 18f2b4a..96b98c8 100644
--- a/qualitative/Pastel2.plt
+++ b/qualitative/Pastel2.plt
@@ -17,7 +17,7 @@ set style line 8 lc rgb '#CCCCCC' # pale grey
 # palette
 set palette maxcolors 8
 set palette defined ( 0 '#B3E2CD',\
-    	    	      1 '#FDCDAC',\
+      1 '#FDCDAC',\
 		      2 '#CDB5E8',\
 		      3 '#F4CAE4',\
 		      4 '#D6F5C9',\
diff --git a/qualitative/Set1.plt b/qualitative/Set1.plt
index fd20c4b..be9b6e6 100644
--- a/qualitative/Set1.plt
+++ b/qualitative/Set1.plt
@@ -1,26 +1,28 @@
 # line styles for ColorBrewer Set1
 # for use with qualitative/categorical data
-# provides 8 easy-to-name colors
+# provides 9 easy-to-name colors
 # compatible with gnuplot >=4.2
 # author: Anna Schneider
 
 # line styles
-set style line 1 lc rgb '#E41A1C' # red
-set style line 2 lc rgb '#377EB8' # blue
-set style line 3 lc rgb '#4DAF4A' # green
-set style line 4 lc rgb '#984EA3' # purple
-set style line 5 lc rgb '#FF7F00' # orange
-set style line 6 lc rgb '#FFFF33' # yellow
-set style line 7 lc rgb '#A65628' # brown
-set style line 8 lc rgb '#F781BF' # pink
+set style line 1 lc rgb '#E41A1C'
+set style line 2 lc rgb '#377EB8'
+set style line 3 lc rgb '#4DAF4A'
+set style line 4 lc rgb '#984EA3'
+set style line 5 lc rgb '#FF7F00'
+set style line 6 lc rgb '#FFFF33'
+set style line 7 lc rgb '#A65628'
+set style line 8 lc rgb '#F781BF'
+set style line 9 lc rgb '#999999'
 
 # palette
-set palette maxcolors 8
+set palette maxcolors 9
 set palette defined ( 0 '#E41A1C',\
-    	    	      1 '#377EB8',\
+      1 '#377EB8',\
 		      2 '#4DAF4A',\
 		      3 '#984EA3',\
 		      4 '#FF7F00',\
 		      5 '#FFFF33',\
 		      6 '#A65628',\
-		      7 '#F781BF' )
+		      7 '#F781BF',\
+		      8 '#999999' )
diff --git a/qualitative/Set2.plt b/qualitative/Set2.plt
index f60bc4c..afd25e7 100644
--- a/qualitative/Set2.plt
+++ b/qualitative/Set2.plt
@@ -17,7 +17,7 @@ set style line 8 lc rgb '#B3B3B3' # grey
 # palette
 set palette maxcolors 8
 set palette defined ( 0 '#66C2A5',\
-    	    	      1 '#FC8D62',\
+      1 '#FC8D62',\
 		      2 '#8DA0CB',\
 		      3 '#E78AC3',\
 		      4 '#A6D854',\
diff --git a/qualitative/Set3.plt b/qualitative/Set3.plt
index 99a55eb..6446996 100644
--- a/qualitative/Set3.plt
+++ b/qualitative/Set3.plt
@@ -1,26 +1,34 @@
 # line styles for ColorBrewer Set3
 # for use with qualitative/categorical data
-# provides 8 colors that are more saturated than the Pastels but less so than Set2
+# provides 12 colors that are more saturated than the Pastels but less so than Set2
 # compatible with gnuplot >=4.2
 # author: Anna Schneider
 
 # line styles
-set style line 1 lc rgb '#8DD3C7' # teal
-set style line 2 lc rgb '#FFFFB3' # banana
-set style line 3 lc rgb '#BEBADA' # lilac
-set style line 4 lc rgb '#FB8072' # red
-set style line 5 lc rgb '#80B1D3' # steel blue
-set style line 6 lc rgb '#FDB462' # adobe orange
-set style line 7 lc rgb '#B3DE69' # lime green
-set style line 8 lc rgb '#FCCDE5' # mauve
+set style line 1 lc rgb '#8dd3c7'
+set style line 2 lc rgb '#ffffb3'
+set style line 3 lc rgb '#bebada'
+set style line 4 lc rgb '#fb8072'
+set style line 5 lc rgb '#80b1d3'
+set style line 6 lc rgb '#fdb462'
+set style line 7 lc rgb '#b3de69'
+set style line 8 lc rgb '#fccde5'
+set style line 9 lc rgb '#d9d9d9'
+set style line 10 lc rgb '#bc80bd'
+set style line 11 lc rgb '#ccebc5'
+set style line 12 lc rgb '#ffed6f'
 
 # palette
-set palette maxcolors 8
-set palette defined ( 0 '#8DD3C7',\
-    	    	      1 '#FFFFB3',\
-		      2 '#BEBADA',\
-		      3 '#FB8072',\
-		      4 '#80B1D3',\
-		      5 '#FDB462',\
-		      6 '#B3DE69',\
-		      7 '#FCCDE5' )
+set palette maxcolors 12
+set palette defined ( 0 '#8dd3c7',\
+	1 '#ffffb3',\
+		      2 '#bebada',\
+		      3 '#fb8072',\
+		      4 '#80b1d3',\
+		      5 '#fdb462',\
+		      6 '#b3de69',\
+		      7 '#fccde5',\
+		      8 '#d9d9d9',\
+		      9 '#bc80bd',\
+		      10 '#ccebc5',\
+		      11 '#ffed6f' )